How Much?

HideShow resource information
  • Created by: emmabesi
  • Created on: 31-12-14 11:04

Masses of atoms & metals-->

  • Relative atomic mass (Ar) is the mass of an atom compared to 1 atom of carbon12.

It's the bigger number on the periodic table

  • Relative formula mass (Mr) is the sum of all Ars in a formula (compoud)         Eg- Mr for CO = 12+16 = 28.
  • The Mr/Ar of a substance in grams is called one mole of that substance…


No comments have yet been made

Similar Science resources:

See all Science resources »See all Biology resources »